Question

describe the law of ohm

Answer 1

Ohm law states that potential difference across two points in a circuit is directly proportional to the current flowing through it.
$v = ir$
Where v is the potential difference
I is the current
And r is constant i.e. resistance

Answer 2

Explanation:

Answer :-

Step-by-step explanation :-

Ohm's law .

→ Ohm's law gives a relationship between current and potential difference .

→ According to Ohm's law : At constant temperature , the current flowing through a conductor is directly proportional to the potential difference across its end .

→ If I is the current flowing through a conductor and V is the potential difference ( or voltage ) across its ends , then according to Ohm's law :

I∝V ( At constant temperature ) .

This can also be written as : V∝I

Or V = R × I .

Where R is a constant called “resistance” of the conductor .

★ Resistance of a conductor : The property of a conductor due to which it opposes the flow of current through it is called resistance .

→ The resistance of a conductor depends on length, thickness, nature of material and temperature of the conductor.

→ The SI unit of resistance is ohm( Ω ) .